449 and 451
x = smaller integer
the difference between 2 consecutive odd integers is 2
x + x + 2 = 900
2x + 2 = 900
-2 -2
2x = 898
/2 /2
x = 449
449 + 2 = 451 (greater integer)
3.85 You take the 46.2 and divide the 12 gallons of gas.
I would say you have a probability of 1/4 to pick a 3 in the first round and 1/3 in the second round
1/4 plus 1/3 = 7/12